§ 150.28. Bulkhead specifications.

(A)

Pilings; stringers; centermatch; deadman/tieback specifications.

PILINGS
 Treatment: no less than CCA 2.5
 Size: no less than 6" x 6" x 12' or 8" x 12' Butts
 Penetration: no less than 60 percent
 Spacing: 5' on center

STRINGERS (Outside)
1) no more than 2' space between top stringers and center
2) shelf level for bottom stringers

STRINGERS (inside - Facia Board)
 Treatment: no less than CCA 2.5
 Size: no less than 2" x 8" rough

CENTERMATCH
 Treatment: no less than CCA 2.5
 Size: no less than 2" x 10" x 10'
 Penetration: no less than 35 percent

DEADMAN OR TIEBACK SPECIFICATIONS
 Size: no less than 8" x 8" x 10'
 Depth: no less than 3'
 Length: no less than 15'
 Rods: no less than 3/4" material galvanized
 Sucker Rods: no less than 1" x 20' w/ 10" augers galvanized

All deadman should be put in horizontally no less than 15' back - preferably 20'.

(B)

Reinforcement.

Height Above Mud Line (Exposure) Feet	Minimum Length of Panel	Horizontal and Vertical Reinforcing
7' or less	Height X 2	#5 bars @ 6" O.C.
6' or less	Height X 2	#4 bars @ 6" O.C.
5' or less	Height X 2	#4 bars @ 7.5" O.C.
4' or less	Height X 2	#4 bars @ 7.5" O.C.

 

Greater than 7 feet: Provide Engineering Design and Certification.

(C)

Properties.

Physical Properties	Unit	Box-Ribbed	Deep-V
Material		Vinyl	Vinyl
Weight	lb/ft.	1.8	1.8
Thickness	in.	0.2	0.2
Linear Coverage/Sheet	in.	10.5	12.0
Depth of Cross Section	in.	6.0	3.0

 

Mechanical Properties	Unit	Box-Ribbed	Deep-V
Tensile strength	lb/in	6,300	6,300
Flexural strength	lb/in	13,000	13,000
Flexural Modulus	lb/in	380,000	380,000
Section Modulus	in /ft	6.1	1.5
Moment of Inertia	in /ft	19.3	2.2
Maximum Moment	lb/ft	3,600	900
Allowable Moment	lb/ft	1,200	300

 

(Ord. 99-753, passed 10-18-99)

DETAIL A: BULKHEAD CONSTRUCTION DETAIL B: CAP AND TIE ROD SYSTEM